Add a small script to run commands in the same docker image used in the
GitLab CI.
For instance, one can run check-package unit tests without installing
pytest directly in the host:
$ ./utils/docker-run python3 -m pytest -v utils/checkpackagelib/
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
[Arnout: fix shellcheck errors; add exec]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
